You might have gone diving before but how about in an underwater sinkhole that is popular for its deep blue color. It was formed as a limestone cave system during the last ice age when sea levels were much lower. As the ocean began to raise the caves flooded, and the roof collapsed.

Venture 120ft deep where you will see remnants of the stalactites which were from dripping water when the cave was above sea level.

This is an experience that you’re going to want to cross off your bucket list. Take a look at some of the other thrilling adventures listed by Reservations.com in the infographic below.